Steam turbine shaft with heat insulation layer

摘要

The steam turbine has a shaft and a discharging unit (16). The shaft has a cooling steam section (10) which is formed for flow of a cooling steam. The cooling steam section is arranged below the discharging unit. The cooling steam section is formed with a thermal insulation layer (13). The shaft is designed as single-flow or double-flow shaft for insertion in a high pressure partial turbine. The thermal insulation layer is formed from an yttrium-stabilized zirconium oxide.